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    /* automatically generated by rust-bindgen */

    use
    super::*;

    #[repr(C)]
    #[derive(Copy, Clone, Debug, Default, Eq, Hash, Ord, PartialEq, PartialOrd)]
    pub struct __BindgenBitfieldUnit<Storage, Align>
    where
        Storage: AsRef<[u8]> + AsMut<[u8]>,
    {
        storage: Storage,
        align: [Align; 0],
    }
    impl<Storage, Align> __BindgenBitfieldUnit<Storage, Align>
    where
        Storage: AsRef<[u8]> + AsMut<[u8]>,
    {
        #[inline]
        pub fn new(storage: Storage) -> Self {
            Self { storage, align: [] }
        }
        #[inline]
        pub fn get_bit(&self, index: usize) -> bool {
            debug_assert!(index / 8 < self.storage.as_ref().len());
            let byte_index = index / 8;
            let byte = self.storage.as_ref()[byte_index];
            let bit_index = if cfg!(target_endian = "big") {
                7 - (index % 8)
            } else {
                index % 8
            };
            let mask = 1 << bit_index;
            byte & mask == mask
        }
        #[inline]
        pub fn set_bit(&mut self, index: usize, val: bool) {
            debug_assert!(index / 8 < self.storage.as_ref().len());
            let byte_index = index / 8;
            let byte = &mut self.storage.as_mut()[byte_index];
            let bit_index = if cfg!(target_endian = "big") {
                7 - (index % 8)
            } else {
                index % 8
            };
            let mask = 1 << bit_index;
            if val {
                *byte |= mask;
            } else {
                *byte &= !mask;
            }
        }
        #[inline]
        pub fn get(&self, bit_offset: usize, bit_width: u8) -> u64 {
            debug_assert!(bit_width <= 64);
            debug_assert!(bit_offset / 8 < self.storage.as_ref().len());
            debug_assert!((bit_offset + (bit_width as usize)) / 8 <= self.storage.as_ref().len());
            let mut val = 0;
            for i in 0..(bit_width as usize) {
                if self.get_bit(i + bit_offset) {
                    let index = if cfg!(target_endian = "big") {
                        bit_width as usize - 1 - i
                    } else {
                        i
                    };
                    val |= 1 << index;
                }
            }
            val
        }
        #[inline]
        pub fn set(&mut self, bit_offset: usize, bit_width: u8, val: u64) {
            debug_assert!(bit_width <= 64);
            debug_assert!(bit_offset / 8 < self.storage.as_ref().len());
            debug_assert!((bit_offset + (bit_width as usize)) / 8 <= self.storage.as_ref().len());
            for i in 0..(bit_width as usize) {
                let mask = 1 << i;
                let val_bit_is_set = val & mask == mask;
                let index = if cfg!(target_endian = "big") {
                    bit_width as usize - 1 - i
                } else {
                    i
                };
                self.set_bit(index + bit_offset, val_bit_is_set);
            }
        }
    }
    #[repr(C)]
    pub struct __BindgenUnionField<T>(::core::marker::PhantomData<T>);
    impl<T> __BindgenUnionField<T> {
        #[inline]
        pub fn new() -> Self {
            __BindgenUnionField(::core::marker::PhantomData)
        }
        #[inline]
        pub unsafe fn as_ref(&self) -> &T {
            ::core::mem::transmute(self)
        }
        #[inline]
        pub unsafe fn as_mut(&mut self) -> &mut T {
            ::core::mem::transmute(self)
        }
    }
    impl<T> ::core::default::Default for __BindgenUnionField<T> {
        #[inline]
        fn default() -> Self {
            Self::new()
        }
    }
    impl<T> ::core::clone::Clone for __BindgenUnionField<T> {
        #[inline]
        fn clone(&self) -> Self {
            Self::new()
        }
    }
    impl<T> ::core::marker::Copy for __BindgenUnionField<T> {}
    impl<T> ::core::fmt::Debug for __BindgenUnionField<T> {
        fn fmt(&self, fmt: &mut ::core::fmt::Formatter<'_>) -> ::core::fmt::Result {
            fmt.write_str("__BindgenUnionField")
        }
    }
    impl<T> ::core::hash::Hash for __BindgenUnionField<T> {
        fn hash<H: ::core::hash::Hasher>(&self, _state: &mut H) {}
    }
    impl<T> ::core::cmp::PartialEq for __BindgenUnionField<T> {
        fn eq(&self, _other: &__BindgenUnionField<T>) -> bool {
            true
        }
    }
    impl<T> ::core::cmp::Eq for __BindgenUnionField<T> {}
    pub const JSON_VALUE_TYPE_BOOL: u32 = 0;
    pub const JSON_VALUE_TYPE_UINT64: u32 = 1;
    pub const JSON_VALUE_TYPE_INT64: u32 = 2;
    pub const JSON_VALUE_TYPE_STRING: u32 = 3;
    pub const JSON_VALUE_TYPE_ARRAY: u32 = 4;
    pub const JSON_VALUE_TYPE_OBJECT: u32 = 5;
    pub const JSON_ATTR_MAX: u32 = 31;
    pub const JSON_VAL_MAX: u32 = 512;
    pub const JSON_ERR_OBSTART: u32 = 1;
    pub const JSON_ERR_ATTRSTART: u32 = 2;
    pub const JSON_ERR_BADATTR: u32 = 3;
    pub const JSON_ERR_ATTRLEN: u32 = 4;
    pub const JSON_ERR_NOARRAY: u32 = 5;
    pub const JSON_ERR_NOBRAK: u32 = 6;
    pub const JSON_ERR_STRLONG: u32 = 7;
    pub const JSON_ERR_TOKLONG: u32 = 8;
    pub const JSON_ERR_BADTRAIL: u32 = 9;
    pub const JSON_ERR_ARRAYSTART: u32 = 10;
    pub const JSON_ERR_OBJARR: u32 = 11;
    pub const JSON_ERR_SUBTOOLONG: u32 = 12;
    pub const JSON_ERR_BADSUBTRAIL: u32 = 13;
    pub const JSON_ERR_SUBTYPE: u32 = 14;
    pub const JSON_ERR_BADSTRING: u32 = 15;
    pub const JSON_ERR_CHECKFAIL: u32 = 16;
    pub const JSON_ERR_NOPARSTR: u32 = 17;
    pub const JSON_ERR_BADENUM: u32 = 18;
    pub const JSON_ERR_QNONSTRING: u32 = 19;
    pub const JSON_ERR_NONQSTRING: u32 = 19;
    pub const JSON_ERR_MISC: u32 = 20;
    pub const JSON_ERR_BADNUM: u32 = 21;
    pub const JSON_ERR_NULLPTR: u32 = 22;
    pub type __uint8_t = ::cty::c_uchar;
    pub type __uint16_t = ::cty::c_ushort;
    pub type __uint64_t = ::cty::c_ulonglong;
    #[repr(C)]
    pub struct json_value {
        pub jv_pad1: u8,
        pub jv_type: u8,
        pub jv_len: u16,
        pub jv_val: json_value__bindgen_ty_1,
    }
    #[repr(C)]
    pub struct json_value__bindgen_ty_1 {
        pub u: __BindgenUnionField<u64>,
        pub fl: __BindgenUnionField<f32>,
        pub str: __BindgenUnionField<*mut ::cty::c_char>,
        pub composite: __BindgenUnionField<json_value__bindgen_ty_1__bindgen_ty_1>,
        pub bindgen_union_field: [u64; 2usize],
    }
    #[repr(C)]
    pub struct json_value__bindgen_ty_1__bindgen_ty_1 {
        pub keys: *mut *mut ::cty::c_char,
        pub values: *mut *mut json_value,
    }
    impl Default for json_value__bindgen_ty_1__bindgen_ty_1 {
        fn default() -> Self {
            unsafe { ::core::mem::zeroed() }
        }
    }
    impl Default for json_value__bindgen_ty_1 {
        fn default() -> Self {
            unsafe { ::core::mem::zeroed() }
        }
    }
    impl Default for json_value {
        fn default() -> Self {
            unsafe { ::core::mem::zeroed() }
        }
    }
    pub type json_write_func_t = ::core::option::Option<
        unsafe extern "C" fn(
            buf: *mut ::cty::c_void,
            data: *mut ::cty::c_char,
            len: ::cty::c_int,
        ) -> ::cty::c_int,
    >;
    #[repr(C)]
    pub struct json_encoder {
        pub je_write: json_write_func_t,
        pub je_arg: *mut ::cty::c_void,
        pub _bitfield_1: __BindgenBitfieldUnit<[u8; 1usize], u8>,
        pub je_encode_buf: [::cty::c_char; 64usize],
    }
    impl Default for json_encoder {
        fn default() -> Self {
            unsafe { ::core::mem::zeroed() }
        }
    }
    impl json_encoder {
        #[inline]
        pub fn je_wr_commas(&self) -> ::cty::c_int {
            unsafe { ::core::mem::transmute(self._bitfield_1.get(0usize, 1u8) as u32) }
        }
        #[inline]
        pub fn set_je_wr_commas(&mut self, val: ::cty::c_int) {
            unsafe {
                let val: u32 = ::core::mem::transmute(val);
                self._bitfield_1.set(0usize, 1u8, val as u64)
            }
        }
        #[inline]
        pub fn new_bitfield_1(je_wr_commas: ::cty::c_int) -> __BindgenBitfieldUnit<[u8; 1usize], u8> {
            let mut __bindgen_bitfield_unit: __BindgenBitfieldUnit<[u8; 1usize], u8> =
                Default::default();
            __bindgen_bitfield_unit.set(0usize, 1u8, {
                let je_wr_commas: u32 = unsafe { ::core::mem::transmute(je_wr_commas) };
                je_wr_commas as u64
            });
            __bindgen_bitfield_unit
        }
    }
    #[mynewt_macros::safe_wrap(attr)] extern "C" {
        pub fn json_encode_object_start(arg1: *mut json_encoder) -> ::cty::c_int;
    }
    #[mynewt_macros::safe_wrap(attr)] extern "C" {
        pub fn json_encode_object_key(
            encoder: *mut json_encoder,
            key: *mut ::cty::c_char,
        ) -> ::cty::c_int;
    }
    #[mynewt_macros::safe_wrap(attr)] extern "C" {
        pub fn json_encode_object_entry(
            arg1: *mut json_encoder,
            arg2: *mut ::cty::c_char,
            arg3: *mut json_value,
        ) -> ::cty::c_int;
    }
    #[mynewt_macros::safe_wrap(attr)] extern "C" {
        pub fn json_encode_object_finish(arg1: *mut json_encoder) -> ::cty::c_int;
    }
    #[mynewt_macros::safe_wrap(attr)] extern "C" {
        pub fn json_encode_array_name(
            encoder: *mut json_encoder,
            name: *mut ::cty::c_char,
        ) -> ::cty::c_int;
    }
    #[mynewt_macros::safe_wrap(attr)] extern "C" {
        pub fn json_encode_array_start(encoder: *mut json_encoder) -> ::cty::c_int;
    }
    #[mynewt_macros::safe_wrap(attr)] extern "C" {
        pub fn json_encode_array_value(
            encoder: *mut json_encoder,
            val: *mut json_value,
        ) -> ::cty::c_int;
    }
    #[mynewt_macros::safe_wrap(attr)] extern "C" {
        pub fn json_encode_array_finish(encoder: *mut json_encoder) -> ::cty::c_int;
    }
    pub const json_type_t_integer: json_type = 0;
    pub const json_type_t_uinteger: json_type = 1;
    pub const json_type_t_real: json_type = 2;
    pub const json_type_t_string: json_type = 3;
    pub const json_type_t_boolean: json_type = 4;
    pub const json_type_t_character: json_type = 5;
    pub const json_type_t_object: json_type = 6;
    pub const json_type_t_structobject: json_type = 7;
    pub const json_type_t_array: json_type = 8;
    pub const json_type_t_check: json_type = 9;
    pub const json_type_t_ignore: json_type = 10;
    pub type json_type = u32;
    #[repr(C)]
    pub struct json_enum_t {
        pub name: *mut ::cty::c_char,
        pub value: ::cty::c_longlong,
    }
    impl Default for json_enum_t {
        fn default() -> Self {
            unsafe { ::core::mem::zeroed() }
        }
    }
    #[repr(C)]
    pub struct json_array_t {
        pub element_type: json_type,
        pub arr: json_array_t__bindgen_ty_1,
        pub count: *mut ::cty::c_int,
        pub maxlen: ::cty::c_int,
    }
    #[repr(C)]
    pub struct json_array_t__bindgen_ty_1 {
        pub objects: __BindgenUnionField<json_array_t__bindgen_ty_1__bindgen_ty_1>,
        pub strings: __BindgenUnionField<json_array_t__bindgen_ty_1__bindgen_ty_2>,
        pub integers: __BindgenUnionField<json_array_t__bindgen_ty_1__bindgen_ty_3>,
        pub uintegers: __BindgenUnionField<json_array_t__bindgen_ty_1__bindgen_ty_4>,
        pub reals: __BindgenUnionField<json_array_t__bindgen_ty_1__bindgen_ty_5>,
        pub booleans: __BindgenUnionField<json_array_t__bindgen_ty_1__bindgen_ty_6>,
        pub bindgen_union_field: [u64; 3usize],
    }
    #[repr(C)]
    pub struct json_array_t__bindgen_ty_1__bindgen_ty_1 {
        pub subtype: *const json_attr_t,
        pub base: *mut ::cty::c_char,
        pub stride: usize,
    }
    impl Default for json_array_t__bindgen_ty_1__bindgen_ty_1 {
        fn default() -> Self {
            unsafe { ::core::mem::zeroed() }
        }
    }
    #[repr(C)]
    pub struct json_array_t__bindgen_ty_1__bindgen_ty_2 {
        pub ptrs: *mut *mut ::cty::c_char,
        pub store: *mut ::cty::c_char,
        pub storelen: ::cty::c_int,
    }
    impl Default for json_array_t__bindgen_ty_1__bindgen_ty_2 {
        fn default() -> Self {
            unsafe { ::core::mem::zeroed() }
        }
    }
    #[repr(C)]
    pub struct json_array_t__bindgen_ty_1__bindgen_ty_3 {
        pub store: *mut ::cty::c_longlong,
    }
    impl Default for json_array_t__bindgen_ty_1__bindgen_ty_3 {
        fn default() -> Self {
            unsafe { ::core::mem::zeroed() }
        }
    }
    #[repr(C)]
    pub struct json_array_t__bindgen_ty_1__bindgen_ty_4 {
        pub store: *mut ::cty::c_ulonglong,
    }
    impl Default for json_array_t__bindgen_ty_1__bindgen_ty_4 {
        fn default() -> Self {
            unsafe { ::core::mem::zeroed() }
        }
    }
    #[repr(C)]
    pub struct json_array_t__bindgen_ty_1__bindgen_ty_5 {
        pub store: *mut f64,
    }
    impl Default for json_array_t__bindgen_ty_1__bindgen_ty_5 {
        fn default() -> Self {
            unsafe { ::core::mem::zeroed() }
        }
    }
    #[repr(C)]
    pub struct json_array_t__bindgen_ty_1__bindgen_ty_6 {
        pub store: *mut bool,
    }
    impl Default for json_array_t__bindgen_ty_1__bindgen_ty_6 {
        fn default() -> Self {
            unsafe { ::core::mem::zeroed() }
        }
    }
    impl Default for json_array_t__bindgen_ty_1 {
        fn default() -> Self {
            unsafe { ::core::mem::zeroed() }
        }
    }
    impl Default for json_array_t {
        fn default() -> Self {
            unsafe { ::core::mem::zeroed() }
        }
    }
    #[repr(C)]
    pub struct json_attr_t {
        pub attribute: *mut ::cty::c_char,
        pub type_: json_type,
        pub addr: json_attr_t__bindgen_ty_1,
        pub dflt: json_attr_t__bindgen_ty_2,
        pub len: usize,
        pub map: *const json_enum_t,
        pub nodefault: bool,
    }
    #[repr(C)]
    pub struct json_attr_t__bindgen_ty_1 {
        pub integer: __BindgenUnionField<*mut ::cty::c_longlong>,
        pub uinteger: __BindgenUnionField<*mut ::cty::c_ulonglong>,
        pub real: __BindgenUnionField<*mut f64>,
        pub string: __BindgenUnionField<*mut ::cty::c_char>,
        pub boolean: __BindgenUnionField<*mut bool>,
        pub character: __BindgenUnionField<*mut ::cty::c_char>,
        pub array: __BindgenUnionField<json_array_t>,
        pub offset: __BindgenUnionField<usize>,
        pub bindgen_union_field: [u64; 6usize],
    }
    impl Default for json_attr_t__bindgen_ty_1 {
        fn default() -> Self {
            unsafe { ::core::mem::zeroed() }
        }
    }
    #[repr(C)]
    pub struct json_attr_t__bindgen_ty_2 {
        pub integer: __BindgenUnionField<::cty::c_longlong>,
        pub uinteger: __BindgenUnionField<::cty::c_ulonglong>,
        pub real: __BindgenUnionField<f64>,
        pub boolean: __BindgenUnionField<bool>,
        pub character: __BindgenUnionField<::cty::c_char>,
        pub check: __BindgenUnionField<*mut ::cty::c_char>,
        pub bindgen_union_field: u64,
    }
    impl Default for json_attr_t__bindgen_ty_2 {
        fn default() -> Self {
            unsafe { ::core::mem::zeroed() }
        }
    }
    impl Default for json_attr_t {
        fn default() -> Self {
            unsafe { ::core::mem::zeroed() }
        }
    }
    pub type json_buffer_read_next_byte_t =
        ::core::option::Option<unsafe extern "C" fn(arg1: *mut json_buffer) -> ::cty::c_char>;
    pub type json_buffer_read_prev_byte_t =
        ::core::option::Option<unsafe extern "C" fn(arg1: *mut json_buffer) -> ::cty::c_char>;
    pub type json_buffer_readn_t = ::core::option::Option<
        unsafe extern "C" fn(
            arg1: *mut json_buffer,
            buf: *mut ::cty::c_char,
            n: ::cty::c_int,
        ) -> ::cty::c_int,
    >;
    #[repr(C)]
    #[derive(Default)]
    pub struct json_buffer {
        pub jb_readn: json_buffer_readn_t,
        pub jb_read_next: json_buffer_read_next_byte_t,
        pub jb_read_prev: json_buffer_read_prev_byte_t,
    }
    #[mynewt_macros::safe_wrap(attr)] extern "C" {
        pub fn json_read_object(arg1: *mut json_buffer, arg2: *const json_attr_t) -> ::cty::c_int;
    }
    #[mynewt_macros::safe_wrap(attr)] extern "C" {
        pub fn json_read_array(arg1: *mut json_buffer, arg2: *const json_array_t) -> ::cty::c_int;
    }

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## Search Tricks

Prefix searches with a type followed by a colon (e.g., `fn:`) to restrict the search to a given type.

Accepted types are: `fn`, `mod`, `struct`, `enum`, `trait`, `type`, `macro`, and `const`.

Search functions by type signature (e.g., `vec -> usize` or `* -> vec`)

Search multiple things at once by splitting your query with comma (e.g., `str,u8` or `String,struct:Vec,test`)